    .mainright a:hover{
    color: rgb(12,130,255);
    }
    #right1{
        float: right;
        width: 920px;
    }
    .mainright{
        float: right;
        width: 470px;
        height: 1000px;
    }
    #div-rightnav{
        float: right;
        overflow: hidden;
        border-left: 1px solid rgb(202, 224, 243);
        width: 442px;
        height: 185px;
        transition: width 0.3s;
    }
    .rightnav{
        width: 881px;
        float: right;
        height: 185px;
        border-top: 1px solid rgb(202, 224, 243);
        border-right: 1px solid rgb(202, 224, 243);
    }
    .rightnavdiv{
        position: relative;
        z-index: 2;
        float: left;
        height: 45px;
        border-bottom: 1px solid rgb(202, 224, 243);
    }
    .rightnavdiv a{
        font-size: 14px;
        line-height: 45px;
        margin: 0 9px;
        text-decoration: none;
        color: rgb(69, 85, 105);
    }
    .rightnavdiv-left a{
        float: right;
    }
    .rightnavdiv-right a{
        float: left;
    }
    .rightnavdiv-left{
        width: 441px;
    }
    .rightnavdiv-right{
        width: 440px;
    }
    .rightnav1{
        background-color: white;
    }
    .rightnav2{
        background-color: rgb(245, 248, 252);
    }
    #arrow{
        position: relative;
        left: 1px;
        z-index: 2;
        float: right;
        height: 45px;
        width: 22px;
        color: rgb(116, 164, 223);
        padding-right: 1px;
        border-bottom: 1px solid rgb(202, 224, 243);
        border-top: 1px solid rgb(202, 224, 243);
        border-left: 1px solid rgb(202, 224, 243);
        border-right: 1px solid rgb(202, 224, 243);
        line-height: 45px;
        cursor: pointer;
    }
    .right2{
        margin-top: 20px;
        margin-left: 30px;
        float: left;
    }
    .rightimg1{
        margin-top: 20px;
    }
    .right3a{
        width: 440px;
        float: left;
        text-decoration: none;
        color: black;
        font-size: 16px;
        margin: 10px 0;
        margin-left: 30px;
    }